(1)On and after the appointed day the British Nationality Acts 1948 to 1965 shall have effect as if in section 1(3) of the [1948 c. 56.] British Nationality Act 1948 (Commonwealth countries having separate citizenship) there were added at the end the words " and Lesotho ".
(2)Except as provided by section 4 of this Act, any person who immediately before the appointed day is a citizen of the United Kingdom and Colonies shall on that day cease to be such a citizen if he becomes on that day a citizen of Lesotho.
(3)Section 6(2) of the British Nationality Act 1948 (registration as citizens of the United Kingdom and Colonies of women who have been married to such citizens) shall not apply to a woman by virtue of her marriage to a person who on the appointed day ceases to be such a citizen under subsection (2) of this section, or who would have done so if living on the appointed day.